Telegraph-sounder



(N9 Model.)

C. D. H'ASKINS.

TELEGRAAPH SOUNDER.

NO. 352,317. Patented Nov. 9, 1886.

-slot at the end 'of the lever.

UNITED STATES PATENT OFFICE.

oI-IARLES n. IIASIIINS, OE BROOKLYN NEW YORK, ASSIGNOR rro fri-IE WESTERN ELEOTRIO OOMPANY, OE CHICAGO, ILLINOIS.

'TELEGRAPH-SOUNDEB.

SPECIFICATION forming part of Letters Patent No. 352,317, dated Novemberg, 1886.

Application tiled June 22, 1886. Serial No. 205.851. (No model.)v

To all whom, it may concern.:

Be it known that l, CHARLES D. HAsKINs, a citizen of the United States, residing in Brooklyn, in the county of Kings and State of New York, have invented certain neW and useful Improvements in Telegraphio Sounders, of which the following is a specification. Y

The invention relates to the construction of telegraphic instruments, and is especially applicable to telegraphic Sounders and keys.

The object of the invention is to provide convenient means for supporting the armature and armature-lever in the proper position relative to the electro-magnet and to dispense with the employment of trunnions or a pivoted support.

The invention further involves a special arrangement of parts, whereby the Working-point of the sounder is placed immediately above the stroke-post, which serves to give a clearerand more sharp reading-stroke.

The armature-lever is Secured to a Ilat spring having rectangular extensions which enter a This insures not only that the lever shall be held in its proper position vertically, but also prevents any` horizontal movement of the same.

It has heretofore been proposed to support a lever of a key or an armature upon a tlat torsional spring.` ln such construction, however, there is danger of the lever turning upon its support horizontally.

In -the accompanying drawings, Figure l is a side elevation, and Fig. 2 an end view, of an instrument embodying the features of the invention. Fig. 3 is a plan.

Referring to the figures, A represents an electro-magnet provided withan armature, a. The armature is carried upon a lever, B, and the lever is supported from two posts, B and B2, extending from a base, C. A spring or plate of resilient metal, D, is attached at its central part to thc lever by means of ascrew, e, or in any other convenient-manner. rIhe ends of this spring are respectively secured to the posts B and B2 by screws b and b2. A slot, c', is formed in the lever B, and a rectangular lip or projection, c2, on the spring D enters this slot. This lip is preferably curved, gradually increasing in width from the ends of the rlhe lever is preferably not dependent for its f retractile force upon the spring D, although it may be so, but is assisted by a coil-spring, E, extending from an arm, c2, securedto the'lever preferably immediately beneath the spring C.

-rlhe other end of this lever is secured to an adjacent screw, f', extending through a post,

G. This post constitutes the sounding-post against which the point g upon the lever B strikes, and is directly beneath the lever.

rlhe arm H extends from the upper end of the sounding-post G in a direction parallel to the lever, and then is curved over the top of the same, and carries a contact-screw or limiting-stop, h, which is adjustable in any convenient manner.

The invention has been described in connection with a telegraphic sounder; but it is evident that the torsion-spring may be applied to the armature-lever of any telegraphic receiving-instrument or to the lever of any telegraphic key without departing from the spirit of the invention.

I claim as my invention l. The combination, with a lever and means for operating the same, of a supporting torsional spring having alip extending from the same entering a slot formed in the lever, substantially as described.

2. ln a telegraph receiving-instrument, the combination, with an electro-magnet and its armature and a lever supporting the armature, of a flat spring secured to said lever and having an angled extension or lip and means for securing said lip to said lever.

3. The combination, with an electromagnet, its armature, and armature-lever, of a fiat supportingspring secured to said lever at a centraiA point, supports for the respective ends of said spring, a lip or angled projection upon one side of said spring, entering' a slot in said lever, and an adjustable retractile spring applied to said lever. Y

4. In a telegraph receiving-instrument, the

IOO

combination of an electro-1nagnet,itsarmature, In testimony whereof I have hereunto suba lever for the same, a at torsional spring carscribed my name this 2d day of June, A. D. rying said lever and having` its ends rigidly 1886.

supported, an arm attached to said lever, ex- CHAS. D. HASKINS. tending in a direction at right angles to said Vitnesses: spring, and a retraetile spring` connected with JAMES HARURLET,

CHARLES A. TERRY.

said arm. 

